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Solution of the A2 variant of the 72 Reshebnik on theoretical mechanics Taskbook Targ SM 1983.
Conditions D2 task (p. 32-35 Manuals Targ SM 1983):
Load mass m 1 is mounted on a spring suspension in the elevator (Figure D2.0 -. D2.9, Table A2.). Elevator moves vertically under the law ξ = 0,5α1t2 + α2sin (ωt) + α3cos (ωt) (ξ-axis is directed vertically upward; ξ is expressed in meters, t - in seconds). On the force load medium resistance R = μv, where v - velocity of the load in relation to the elevator.
Find the movement of the load in relation to the elevator, ie, x = f (t)..; origin placed at a point where the load is attached to the end of the spring when the spring is not deformed. In order to avoid errors in the symbols in the x axis direction of elongation of the spring and draw load in the state in which x> 0; spring is stretched. When calculations can take g = 10 m / s2. Massa springs and connecting rod 2 neglected.
The table indicated: c1, c2, c3 - stiffness coefficients of the springs, λ0 - extension spring stiffness equivalent to the initial time t = 0, v0 - initial velocity with respect to the cargo elevator (directed vertically upwards). A dash in columns c1, c2, c3 indicates that the spring is not depicted in the drawing and it should not. If the end of the remaining one of the springs will be free, it must be attached in a suitable position, or the load or to the ceiling (the floor) of the elevator; the same should be done if the free will connected strip 2 of both ends of the remaining springs. The condition μ = 0 means that there is no resistance force R.

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After payment you will receive a link to a zip-archive with a solution of 72 Option D2 on the theoretical mechanics of manuals SM Targ 1983 for part-time students (Reshebnik Targ 1983).
The task performed by the methodical instructions and control tasks for part-time students of thermal power, mining, metallurgy, electro-instrument-making, automation and technological specialties universities.
The decision is decorated in WORD format.

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